CA2795935C - Modified urea-formaldehyde binders for non-woven fiber glass mats - Google Patents
Modified urea-formaldehyde binders for non-woven fiber glass mats Download PDFInfo
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- CA2795935C CA2795935C CA2795935A CA2795935A CA2795935C CA 2795935 C CA2795935 C CA 2795935C CA 2795935 A CA2795935 A CA 2795935A CA 2795935 A CA2795935 A CA 2795935A CA 2795935 C CA2795935 C CA 2795935C
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- starch
- urea
- fiber reinforced
- formaldehyde resin
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- 239000011230 binding agent Substances 0.000 title claims abstract description 86
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical class O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 239000011152 fibreglass Substances 0.000 title description 8
- 239000000203 mixture Substances 0.000 claims abstract description 74
- 229920002472 Starch Polymers 0.000 claims abstract description 63
- 235000019698 starch Nutrition 0.000 claims abstract description 63
- 229920001807 Urea-formaldehyde Polymers 0.000 claims abstract description 60
- 239000008107 starch Substances 0.000 claims abstract description 58
- 239000003733 fiber-reinforced composite Substances 0.000 claims abstract description 37
- 239000002131 composite material Substances 0.000 claims abstract description 17
- 239000011159 matrix material Substances 0.000 claims abstract description 7
- 239000012784 inorganic fiber Substances 0.000 claims abstract description 6
- 229920000642 polymer Polymers 0.000 claims abstract description 5
- 239000003607 modifier Substances 0.000 claims description 26
- 239000007787 solid Substances 0.000 claims description 18
- 239000003208 petroleum Substances 0.000 claims description 14
- 239000003365 glass fiber Substances 0.000 claims description 13
- 229920000881 Modified starch Polymers 0.000 claims description 9
- 235000019426 modified starch Nutrition 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 3
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 claims 9
- 239000004368 Modified starch Substances 0.000 claims 6
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims 6
- 239000003431 cross linking reagent Substances 0.000 claims 3
- 230000000052 comparative effect Effects 0.000 claims 2
- 125000000524 functional group Chemical group 0.000 claims 2
- 229920005989 resin Polymers 0.000 abstract description 57
- 239000011347 resin Substances 0.000 abstract description 57
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 42
- 239000000835 fiber Substances 0.000 description 18
- 235000013877 carbamide Nutrition 0.000 description 11
- 229920001187 thermosetting polymer Polymers 0.000 description 11
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 10
- 239000004202 carbamide Substances 0.000 description 10
- 239000004816 latex Substances 0.000 description 10
- 229920000126 latex Polymers 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000011342 resin composition Substances 0.000 description 6
- 238000007792 addition Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- -1 prill Chemical compound 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000002174 Styrene-butadiene Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229920002689 polyvinyl acetate Polymers 0.000 description 3
- 239000011118 polyvinyl acetate Substances 0.000 description 3
- 239000011115 styrene butadiene Substances 0.000 description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 229920000768 polyamine Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 1
- 240000003183 Manihot esculenta Species 0.000 description 1
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 244000061456 Solanum tuberosum Species 0.000 description 1
- 235000002595 Solanum tuberosum Nutrition 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 229920006320 anionic starch Polymers 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 239000003139 biocide Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000012777 commercial manufacturing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 125000004184 methoxymethyl group Chemical group [H]C([H])([H])OC([H])([H])* 0.000 description 1
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- 229920002866 paraformaldehyde Polymers 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 235000012015 potatoes Nutrition 0.000 description 1
- 150000003141 primary amines Chemical class 0.000 description 1
- HJKODFBJSPEFPW-UHFFFAOYSA-N prop-1-ene-1,1,3-triol Chemical group OCC=C(O)O HJKODFBJSPEFPW-UHFFFAOYSA-N 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 150000003335 secondary amines Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000020354 squash Nutrition 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/043—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
- C08J5/241—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs using inorganic fibres
- C08J5/244—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs using inorganic fibres using glass fibres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08L61/22—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C08L61/24—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with urea or thiourea
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2361/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08J2361/22—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C08J2361/24—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with urea or thiourea
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
- Y10T442/2926—Coated or impregnated inorganic fiber fabric
- Y10T442/2992—Coated or impregnated glass fiber fabric
Abstract
Urea-formaldehyde (UF) resin binder compositions modified with a starch are described. The binder compositions may include about 1 wt.% to about 10 wt.% of a starch. In addition, fiber reinforced composites are described. The composites may include organic or inorganic fibers and a polymer matrix formed from a binder composition. The binder composition may include a UF resin and about 1 wt.% to about 10 wt.% of a starch.
Description
MODIFIED UREA-FORMALDEHYDE BINDERS FOR NON-WOVEN
FIBER GLASS MATS
[0001]
BACKGROUND OF THE INVENTION
FIBER GLASS MATS
[0001]
BACKGROUND OF THE INVENTION
[0002] Thermoset urea-formaldehyde (UF) resins are commonly used as binders for fiber reinforced composites because of their suitability for various applications and their relatively low cost. However, fiber reinforced composites bonded with neat UF resin are often brittle and cause processing and product performance issues. In order to overcome these issues, it is common to modify UF resin with conventional latexes, such as polyvinyl acetate, vinyl acrylic, or styrene-butadiene latexes. Modifying UF resin with conventional latexes improves the flexibility of fiber reinforced composites which in turn improves the strength of fiber reinforced composites. Improved strength is needed to achieve high speed processing of fiber reinforced composites on commercial manufacturing lines as well as optimal product performance.
However, these conventional latex modifiers are typically expensive and the modification of UF
resins with conventional latexes increases binder cost significantly. In addition, conventional latexes are petroleum-based, and are thus derived from a non-renewable and non-sustainable resource. Therefore, there is a need to develop binder compositions that are more cost effective, more environmentally sustainable, and that do not degrade the strength of fiber reinforced composites.
BRIEF SUMMARY OF THE INVENTION
However, these conventional latex modifiers are typically expensive and the modification of UF
resins with conventional latexes increases binder cost significantly. In addition, conventional latexes are petroleum-based, and are thus derived from a non-renewable and non-sustainable resource. Therefore, there is a need to develop binder compositions that are more cost effective, more environmentally sustainable, and that do not degrade the strength of fiber reinforced composites.
BRIEF SUMMARY OF THE INVENTION
[0003] Binder compositions are described that include urea-formaldehyde (UF) resin and a starch modifier at concentration levels that strengthen the tensile and tear strength (among other properties) of composites formed with the binder compositions. The starch may replace at least a portion of the conventional, petroleum-based modifiers used in the binder compositions to create composites based on more sustainable and renewable materials than conventional composites.
[0004] There is widespread belief that starches would make inadequate substitutes for petroleum-based modifiers, especially in composites exposed to hot, humid conditions such as roofing materials. The present starch-containing binder compositions are shown to form composites with hot/wet tensile strength that is actually higher than comparable composites made exclusively with petroleum-based modifiers. Thus, the present binder compositions are not only made with environmentally advantageous materials, they also demonstrate performance characteristics that make them superior materials for challenging environments such as roofing materials in hot, humid climates.
[0005] Embodiments of the invention include binder compositions that include UF resins and starch used as a modifier/strengthener. The concentration of the starch may by about 1 wt.% to about 10 wt.% of the binder composition.
[0006] Embodiments of the invention further include fiber reinforced composites that include a polymer matrix formed from a binder composition having UF resin and about 1 wt.% to about 10 wt.% of a starch. The composites may further include organic and/or inorganic fibers.
[0007] Additional embodiments and features are set forth in part in the description that follows, and in part will become apparent to those skilled in the art upon examination of the specification or may be learned by the practice of the invention. The features and advantages of the invention may be realized and attained by means of the instrumentalities, combinations, and methods described in the specification.
BRIEF DESCRIPTION OF THE DRAWINGS
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] A further understanding of the nature and advantages of the present invention may be realized by reference to the remaining portions of the specification and the drawings wherein like reference numerals may be used throughout the drawings to refer to similar components. In some instances, a sublabel is associated with a reference numeral and follows a hyphen to denote one of multiple similar components. When reference is made to a reference numeral without specification to an existing sublabel, it is intended to refer to all such multiple similar components.
[0009] Figure 1 is a graph of dry tensile in machine-direction (MD), hot/wet tensile (MD), and total tear strengths for fiber glass mat samples bonded with modified UF
resins, expressed as a ratio to a standard UF resin.
DETAILED DESCRIPTION OF THE INVENTION
resins, expressed as a ratio to a standard UF resin.
DETAILED DESCRIPTION OF THE INVENTION
[0010] Exemplary binder compositions and their use in fiber reinforced composites are described. These compositions may include combinations of conventional thermoset binders such as urea-formaldehyde (UF) and starches to at least partially replace more conventional, petroleum-based modifiers such as polyvinyl acetate, acrylic latexes, and/or styrene-butadiene latexes, among other modifiers. The fiber reinforced composites made from these binder compositions may have tensile and tear strength characteristics that exceed those made exclusively with petroleum-based modifiers.
Exemplary Binder Compositions
Exemplary Binder Compositions
[0011] The present binder compositions may include a urea-formaldehyde based resin and one or more starch compounds with concentrations that promote the tougheneing and/or strengthening of a composite made from the binder. Exemplary starch concentration ranges may be from about 1 wt.% to about 10 wt.% of the binder composition.
Additional exemplary starch concentration ranges may include about 1 wt.% to about 7.5 wt.%; about 1 wt.% to about wt%; 1 wt.% to about 4 wt.%; about 1 wt.% to about 3 wt.%; about 1 wt.% to about 2.5 wt%;
about 1 wt.% to about 2 wt.%; about 1 wt% to about 1.5 wt.%. etc.
Additional exemplary starch concentration ranges may include about 1 wt.% to about 7.5 wt.%; about 1 wt.% to about wt%; 1 wt.% to about 4 wt.%; about 1 wt.% to about 3 wt.%; about 1 wt.% to about 2.5 wt%;
about 1 wt.% to about 2 wt.%; about 1 wt% to about 1.5 wt.%. etc.
[0012] A ceiling for the starch concentration may be set such that the starch does not function as a significant thickener in the binder composition that substantially increases the viscosity of the composition. For example, the concentration of the starch may have an upper limit threshold of about 10 wt.% in embodiments where it is not desired for the starch to act as a thickener.
[0013] The starches used in the present binder compositions may include one or more native or modified starches. The native or modified starches may be derived from corn, potatoes, tapioca, or wheat among other sources. Exemplary modified starches may include cationic or anionic starches. One example of modified cationic starch is the RediBOND5330 starch produced by National Starch.
[0014] In some embodiments, the size of the starch compounds may be controlled to affect the thickness of the binder compositions. Exemplary weight average molecular weights may include a range of about 200,000 g/mol or less; about 190,000 g/mol or less;
about 180,000 g/mol or less; about 170,000 g/mol or less; about 160,000 g/mol or less; or about 150,000 g/mol or less; etc. Further exemplary weight average molecular weights may include about 100,000 g/mol or less; about 90,000 g/mol or less; about 80,000 g/mol or less; about 70,000 g/mol or less; about 60,000 g/mol or less; about 50,000 g/mol or less; etc.
about 180,000 g/mol or less; about 170,000 g/mol or less; about 160,000 g/mol or less; or about 150,000 g/mol or less; etc. Further exemplary weight average molecular weights may include about 100,000 g/mol or less; about 90,000 g/mol or less; about 80,000 g/mol or less; about 70,000 g/mol or less; about 60,000 g/mol or less; about 50,000 g/mol or less; etc.
[0015] Higher weight average molecular weight ranges for the starches are also contemplated for embodiments of the present binder compositions. For example, the starch may have a weight average molecular weight range of about 100,000 to about 2,000,000 g/mole. Additional exemplary ranges include about 200,000 to about 1,000,000 g/mole.
[0016] The present binder compositions may alternatively include a urea-formaldehyde based resin, one or more starch compounds, and/or one or more petroleum-based modifiers. The petroleum-based modifiers may include polyvinyl acetate, acrylic latexes, and/or styrene-butadiene latexes, among other modifiers. The weight ratio of the starch to the petroleum-based plasticizer may be about 0.1:1 or more. Alternatively, the starch may replace about 10 wt.% of the petroleum-based plasticizer.
[0017] The thermosetting urea-formaldehyde (UF) resins used in the present binder compositions may be prepared from urea and formaldehyde monomers and UF
precondensates. Suitable resin compositions include thermosetting UF resin compositions that can be used for making binder compositions for fiber mats. Any form of these resin compositions which can react with other reactants and not introduce extraneous moieties deleterious to the desired reaction and reaction product can be utilized.
Exemplary thermosetting UF resins that may be used in preparing the present binder compositions are disclosed in U.S. Pat. No. 5,851,933.
precondensates. Suitable resin compositions include thermosetting UF resin compositions that can be used for making binder compositions for fiber mats. Any form of these resin compositions which can react with other reactants and not introduce extraneous moieties deleterious to the desired reaction and reaction product can be utilized.
Exemplary thermosetting UF resins that may be used in preparing the present binder compositions are disclosed in U.S. Pat. No. 5,851,933.
[0018] Formaldehyde for making the thermosetting UF resin is available in many forms.
Examples include paraform (solid, polymerized formaldehyde) and formalin solutions (aqueous solutions of formaldehyde, sometimes with a small amount of methanol, in 37%, 44%, or 50%
formaldehyde concentrations). Formaldehyde also is available as a gas.
Examples include paraform (solid, polymerized formaldehyde) and formalin solutions (aqueous solutions of formaldehyde, sometimes with a small amount of methanol, in 37%, 44%, or 50%
formaldehyde concentrations). Formaldehyde also is available as a gas.
[0019] Similarly, urea for thermosetting UF resins is available in many forms.
Solid urea, such as prill, and urea solutions, typically aqueous solutions, may be used.
Further, the urea may be combined with another moiety, such as formaldehyde and urea-formaldehyde adducts, which may be provided in aqueous solution.
Solid urea, such as prill, and urea solutions, typically aqueous solutions, may be used.
Further, the urea may be combined with another moiety, such as formaldehyde and urea-formaldehyde adducts, which may be provided in aqueous solution.
[0020] A wide variety of procedures may be used for reacting the principal urea and formaldehyde components to form an aqueous thermosetting UF resin composition, such as staged monomer addition, staged catalyst addition, pH control, and amine modification among other procedures. The urea and formaldehyde may be reacted at a mole ratio of formaldehyde to urea in the range of about 1.1:1 to 4:1. For example, urea and formaldehyde may be reacted at an F:U mole ratio of between about 2.1:1 to 3.2:1. The U-F resin may also be highly water dilutable, if not water soluble.
[0021] Exemplary resin compositions may contain reactive methylol groups, which upon curing form methylene or ether linkages. Such methylol-containing adducts may include N,N'-dimethylol, dihydroxymethylolethylene; N,N'bis(methoxymethyl), N,N'-dimethylolpropylene; 5,5-dimethyl-N,Hdimethylolethylene; N,N'-dimethylolethylene; and the like.
[0022] Thermosetting UF resins useful in the practice of the invention may contain 45 to 75%
by weight nonvolitiles, for example about 50 to 60% by weight nonvolitiles.
These resins may also have an initial viscosity of about 50 to 600 cPs. For example, a thermosetting UF resin useful in the practice of the invention may have a viscosity of 150 to 400 cPs. Additionally, a thermosetting UF resin may exhibit a pH of 7.0 to 9.0 or alternatively 7.5 to 8.5. These resins may also have a free formaldehyde level of not more than about 3.0% (for example less than 1%) and a water dilutability of 1:1 to 100:1 (for example 5:1 and above).
by weight nonvolitiles, for example about 50 to 60% by weight nonvolitiles.
These resins may also have an initial viscosity of about 50 to 600 cPs. For example, a thermosetting UF resin useful in the practice of the invention may have a viscosity of 150 to 400 cPs. Additionally, a thermosetting UF resin may exhibit a pH of 7.0 to 9.0 or alternatively 7.5 to 8.5. These resins may also have a free formaldehyde level of not more than about 3.0% (for example less than 1%) and a water dilutability of 1:1 to 100:1 (for example 5:1 and above).
[0023] A resin modifier such as ammonia, alkanolamines, or polyamines may be added to the reactants that are used to make the UF resin. Polyamines may include an alkyl primary diamine such as ethylenediamine (EDA). Additional modifiers, such as melamine, ethylene ureas, primary amines, secondary amines, and tertiary amines may also be incorporated into a UF
resin. Concentrations of these modifiers in the reaction mixture often will vary from 0.05 to 15.0% by weight of the UF resin solids. These types of modifiers may promote hydrolysis resistance, polymer flexibility, and lower formaldehyde emissions in the cured resin. Further urea additions for purposes of scavenging formaldehyde or as a diluent may also be used. The present binder compositions may also contain a variety of additives such as silica colloid to enhance fire resistance, antifoamers, biocides, pigments, surfactants and the like.
resin. Concentrations of these modifiers in the reaction mixture often will vary from 0.05 to 15.0% by weight of the UF resin solids. These types of modifiers may promote hydrolysis resistance, polymer flexibility, and lower formaldehyde emissions in the cured resin. Further urea additions for purposes of scavenging formaldehyde or as a diluent may also be used. The present binder compositions may also contain a variety of additives such as silica colloid to enhance fire resistance, antifoamers, biocides, pigments, surfactants and the like.
[0024] The binder compositions may have a solids content of about 5 wt.% to about 70 wt.%.
Exemplary solids contents for binder compositions that have not been diluted with water (e.g., resin compositions) may be greater than about 35 wt.%; greater than about 40 wt.%; greater than about 45 wt.%; greater than about 50 wt.%; etc. Exemplary solids content ranges may include about 5 wt.% to about 35 wt.% and about 45 wt.% to about 70 wt.%, among others.
Exemplary solids contents for aqueous binder compositions may include about 35 wt.% or less;
about 30 wt.% or less; about 25 wt.% or less; about 20 wt.% or less; about 15 wt.% or less; etc.
Exemplary solids content ranges for aqueous binder compositions may include about 10 wt.% to about 30 wt.%, among others.
Exemplary Fiber Reinforced Composites
Exemplary solids contents for binder compositions that have not been diluted with water (e.g., resin compositions) may be greater than about 35 wt.%; greater than about 40 wt.%; greater than about 45 wt.%; greater than about 50 wt.%; etc. Exemplary solids content ranges may include about 5 wt.% to about 35 wt.% and about 45 wt.% to about 70 wt.%, among others.
Exemplary solids contents for aqueous binder compositions may include about 35 wt.% or less;
about 30 wt.% or less; about 25 wt.% or less; about 20 wt.% or less; about 15 wt.% or less; etc.
Exemplary solids content ranges for aqueous binder compositions may include about 10 wt.% to about 30 wt.%, among others.
Exemplary Fiber Reinforced Composites
[0025] The present fiber reinforced composites may include a binder matrix made from the present binder compositions and organic and/or inorganic fibers. Organic fibers may include without limitation, acrylic, aromatic polyamides, polyesters, cellulosic fibers, and/or polyolefin fibers among others. Exemplary inorganic fibers may include mineral fibers, ceramic fibers, graphite fibers, metal fibers, metal coated glass or graphite fibers, and/or glass fibers among others. Various glass fibers may be suitable for use in this invention including E type, T type, C
type, A type, and S type glass fibers. In one embodiment, a fiber reinforced composite may include a binder matrix made from the present binder compositions and glass fibers. In another embodiment, a fiber reinforced composite may include a binder matrix made from the present binder composition, glass fibers, and up to about 25 wt.% organic fibers.
type, A type, and S type glass fibers. In one embodiment, a fiber reinforced composite may include a binder matrix made from the present binder compositions and glass fibers. In another embodiment, a fiber reinforced composite may include a binder matrix made from the present binder composition, glass fibers, and up to about 25 wt.% organic fibers.
[0026] Fibers used in the present fiber reinforced composites may independently have lengths of about 1/4 inch to 5 inches (about 6 to about 140 mm) and diameters of about 3 to 25 microns. For example, glass fibers having diameters in the range of 3 to 25 microns may be used. Alternatively, glass fibers having diameters in the range of 12 to 17 microns may be used. The glass fibers may all have about the same target length, such as 0.75 inches, 1 inch, or 1.25 inches. However, fibers of different lengths and diameters can also be used to produce composites with different characteristics. Glass fibers used in a wet process for making fiber glass mats may be up to about 3 to 5 inches in length, and even longer fibers can be used in some processes. Generally the longer the fiber, the higher the tensile and strengths of the mat, but the poorer the fiber dispersion.
[0027] In addition (or in lieu of) the fibers, solid particles such as organic and/or inorganic flakes (e.g., carbon and/or glass flakes) may reinforce the composite. Other reinforcing solid particles may include ceramic particles, metal particles such as aluminum, and amorphous materials including polymers and carbon black among other particles.
[0028] The fiber reinforced composites may include fiber reinforced mats used for building materials, for example, as components of roofing shingles. The mats may be formed by contacting the binder compositions with a woven or non-woven mat of fibers (e.g., glass fibers) and curing the mixture to form the composite mat. The finished mat may contain about 55 wt.%
to about 97 wt.% fibers, and about 3 wt.% to about 45 M.% (e.g., about 15-30 wt.%) of the binder matrix (i.e., the cured binder).
to about 97 wt.% fibers, and about 3 wt.% to about 45 M.% (e.g., about 15-30 wt.%) of the binder matrix (i.e., the cured binder).
[0029] The present fiber reinforced composites that include starch as a modifier/strengthener have comparable and in some cases enhanced strength characteristics compared with composites made exclusively with petroleum-based modifiers. For example, fiber reinforced composites that include starch have hot/wet tensile strengths that are about 5% to about 10%
greater than fiber reinforced composites that include acrylic latex modifier.
In another example, fiber reinforced composites that include starch have total tear strengths that are about 5% to about 10% greater than fiber reinforced composites that include acrylic latex modifer.
greater than fiber reinforced composites that include acrylic latex modifier.
In another example, fiber reinforced composites that include starch have total tear strengths that are about 5% to about 10% greater than fiber reinforced composites that include acrylic latex modifer.
[0030] While not wishing to be bound by any particular scientific theory, it is believed that starch and UF resin crosslink with each other via reaction between hydroxyl functionalities on starch molecules and reactive functionalities on UF resin, and this crosslinking strengthens fiber glass composites. Latex modifiers are often non-reactive or less reactive toward UF resin, and thus there is minimal or no crosslinking between the UF resin and the latex modifier. The substantial increase in hot/wet tensile and tear strength for a UF resin modified with starch, as compared to a UF resin modified with latex (see Figure 1), indicates that crosslinking occurs between UF resin and starch.
[0031] The present fiber reinforced composites that include starch as a modifier/strengthener also have enhanced strength characteristics compared with composites made without modifiers/strengtheners. For example, fiber reinforced composites that include starch have tensile strengths that are about 5% to about 40% greater than fiber reinforced composites made with unmodified UF resin. In another example, fiber reinforced composites that include starch have hot/wet tensile strengths that are about 5% to about 35% greater than fiber reinforced composites made with unmodified UF resin. In an alternate example, fiber reinforced composites that include starch have total tear strengths that are about 10% to about 35%
greater than fiber reinforced composites made with unmodified UF resin.
EXPERIMENTAL
greater than fiber reinforced composites made with unmodified UF resin.
EXPERIMENTAL
[0032] As noted above, the fiber reinforced composites made from the present binder compositions show improved dry tensile, hot/wet tensile, and tear strengths as compared to corresponding binder compositions without starch. Table 1 shows the results of dry tensile, hot/wet tensile, and tear tests for non-woven fiber glass mat samples bonded with various UF
resins. The UF resins evaluated included (1) a FG-705C UF resin from Hexion (standard resin), (2) a FG-705C UF resin from Hexion modified with 2.5%, 5%, 7.5%, and 10 wt.%
RediBOND5330 starch, and (3) a FG-705C UF resin from Hexion modified with 2.5 wt.% GL720 acrylic latex from Rohm & Haas.
resins. The UF resins evaluated included (1) a FG-705C UF resin from Hexion (standard resin), (2) a FG-705C UF resin from Hexion modified with 2.5%, 5%, 7.5%, and 10 wt.%
RediBOND5330 starch, and (3) a FG-705C UF resin from Hexion modified with 2.5 wt.% GL720 acrylic latex from Rohm & Haas.
[0033] Dry tensile and hot/wet tensile strengths for fiber glass mats bonded with UF resins were measured in the machine direction (MD) at room temperature. Tear strengths for fiber glass mats bonded with UF resins were measured in both the machine direction and cross machine direction (CMD) at room temperature using a standard Instron.
Table 1: Physical Properties of UF Resins Hot/VVet Tensile Hot/W Tear (MD
Dry Tensile (MD) (MD) et +CMD) Binder LOI ___________________________ Retenti Mean STDev Mean STDev Mean STDev on 19.3% 34.7 6.4 24.1 6.2 69.5% 914.3 100.8 (Standard) FG-705C +
18.9% 38.6 4.5 26.3 4.1 68.1% 1051.5 137.1 2.5% Starch FG-705C + 5%
18.9% 43.8 7.3 27.8 5.2 63.5% 1075.1 154.2 Starch FG-705C +
19.0% 46.0 9.8 29.4 3.6 63.9% 1080.0 113.7 7.5% Starch FG-705C + 10%
19.1% 44.8 11 30.8 1.9 68.8% 1163.9 100.0 Starch FG-705C +
19.1% 38.5 6.4 24.7 3.0 64.2% 967.7 107.8 2.5% GL720
Table 1: Physical Properties of UF Resins Hot/VVet Tensile Hot/W Tear (MD
Dry Tensile (MD) (MD) et +CMD) Binder LOI ___________________________ Retenti Mean STDev Mean STDev Mean STDev on 19.3% 34.7 6.4 24.1 6.2 69.5% 914.3 100.8 (Standard) FG-705C +
18.9% 38.6 4.5 26.3 4.1 68.1% 1051.5 137.1 2.5% Starch FG-705C + 5%
18.9% 43.8 7.3 27.8 5.2 63.5% 1075.1 154.2 Starch FG-705C +
19.0% 46.0 9.8 29.4 3.6 63.9% 1080.0 113.7 7.5% Starch FG-705C + 10%
19.1% 44.8 11 30.8 1.9 68.8% 1163.9 100.0 Starch FG-705C +
19.1% 38.5 6.4 24.7 3.0 64.2% 967.7 107.8 2.5% GL720
[0034] Figure 1 shows the improvements in dry tensile, hot/wet tensile, and tear strength exhibited by starch modified UF resins and an acrylic latex modified UF resin over a standard UF resin. Substantial increases in dry tensile, hot/wet tensile and tear strength are obtained when starch is added to a standard UF resin. Figure 1 also shows that comparable dry tensile strengths are exhibited by composites made with 2.5 wt.% latex modified UF
resin and 2.5 wt.%
starch modified UF resin. Both exhibit about an 11% increase in dry tensile strength over a standard UF binder. Additionally, Figure 1 shows that a 2.5 wt.% starch modified UF resin exhibits improved hot/wet tensile and tear strength as compared to a 2.5 wt.%
acrylic latex-modified UF resin, about 6.6% and 9.1% respectively.
resin and 2.5 wt.%
starch modified UF resin. Both exhibit about an 11% increase in dry tensile strength over a standard UF binder. Additionally, Figure 1 shows that a 2.5 wt.% starch modified UF resin exhibits improved hot/wet tensile and tear strength as compared to a 2.5 wt.%
acrylic latex-modified UF resin, about 6.6% and 9.1% respectively.
[0035] Table 2 lists viscosities of various binder compositions at 16% solids.
The data shows that the standard binder, the starch modified binder, and the latex modified binder all exhibit comparable viscosities.
Table 2: Viscosities of UF Resins Viscosity @ 16%
Binder Solids (cPs) 5.44 (standard) FG-705C +
5.53 1%Starch FG-705C + 2.5%
5.53 Starch FG-705C + 2.5%
5.06
The data shows that the standard binder, the starch modified binder, and the latex modified binder all exhibit comparable viscosities.
Table 2: Viscosities of UF Resins Viscosity @ 16%
Binder Solids (cPs) 5.44 (standard) FG-705C +
5.53 1%Starch FG-705C + 2.5%
5.53 Starch FG-705C + 2.5%
5.06
[0036] Having described several embodiments, it will be recognized by those of skill in the art that various modifications, alternative constructions, and equivalents may be used without departing from the spirit of the invention. Additionally, a number of well-known processes and elements have not been described in order to avoid unnecessarily obscuring the present invention. Accordingly, the above description should not be taken as limiting the scope of the invention.
[0037] Where a range of values is provided, it is understood that each intervening value, to the tenth of the unit of the lower limit unless the context clearly dictates otherwise, between the upper and lower limits of that range is also specifically disclosed. Each smaller range between any stated value or intervening value in a stated range and any other stated or intervening value in that stated range is encompassed. The upper and lower limits of these smaller ranges may independently be included or excluded in the range, and each range where either, neither or both limits are included in the smaller ranges is also encompassed within the invention, subject to any specifically excluded limit in the stated range. Where the stated range includes one or both of the limits, ranges excluding either or both of those included limits are also included.
[0038] As used herein and in the appended claims, the singular forms "a", "an", and "the"
include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a process" includes a plurality of such processes and reference to "the starch"
includes reference to one or more starches and equivalents thereof known to those skilled in the art, and so forth.
include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a process" includes a plurality of such processes and reference to "the starch"
includes reference to one or more starches and equivalents thereof known to those skilled in the art, and so forth.
[0039] Also, the words "comprise," "comprising," "include," "including," and "includes" when used in this specification and in the following claims are intended to specify the presence of stated features, integers, components, or steps, but they do not preclude the presence or addition of one or more other features, integers, components, steps, acts, or groups.
Claims (18)
1. A binder composition comprising:
i) a urea-formaldehyde resin; and ii) about 1 wt.% to about 10 wt.% of a starch crosslinking agent selected from the group consisting of a native starch, a cationically modified starch, and an anionically modified starch, wherein hydroxyl functional groups on the starch bond to reactive functional groups on the urea-formaldehyde resin; and wherein the binder composition lacks a styrene-containing, petroleum-based modifier.
i) a urea-formaldehyde resin; and ii) about 1 wt.% to about 10 wt.% of a starch crosslinking agent selected from the group consisting of a native starch, a cationically modified starch, and an anionically modified starch, wherein hydroxyl functional groups on the starch bond to reactive functional groups on the urea-formaldehyde resin; and wherein the binder composition lacks a styrene-containing, petroleum-based modifier.
2. The binder composition of claim 1, wherein the binder composition comprises about 1 wt.% to about 2.5 wt.% of the starch.
3. The binder composition of claim 1, wherein the binder composition has a solids content of greater than 35 wt.%.
4. The binder composition of claim 1, wherein the binder composition has a solids content of about 45 wt.% to about 70 wt.%.
5. The binder composition of claim 1 , wherein the binder composition further comprises water.
6. The binder composition of claim 5, wherein the binder composition has a solids content of about 5 to about 35 wt.%.
7. A fiber reinforced composite comprising:
a) a polymer matrix formed from a binder composition that comprises:
i) a urea-formaldehyde resin; and ii) about 1 wt.% to about 10 wt.% of a starch crosslinking agent selected from the group consisting of a native starch, a cationically modified starch, and an anionically modified starch, wherein hydroxyl functional groups on the starch bond to reactive functional groups on the urea-formaldehyde resin, and wherein the binder composition lacks a styrene-containing, petroleum-based modifier; and b) organic or inorganic fibers, wherein the urea-formaldehyde resin and the starch are crosslinked to increase a hot/wet tensile strength of the fiber-reinforced composite by 5% to 35%
compared to a comparative fiber-reinforced composite made with an unmodified urea-formaldehyde binder composition that lacks the starch.
a) a polymer matrix formed from a binder composition that comprises:
i) a urea-formaldehyde resin; and ii) about 1 wt.% to about 10 wt.% of a starch crosslinking agent selected from the group consisting of a native starch, a cationically modified starch, and an anionically modified starch, wherein hydroxyl functional groups on the starch bond to reactive functional groups on the urea-formaldehyde resin, and wherein the binder composition lacks a styrene-containing, petroleum-based modifier; and b) organic or inorganic fibers, wherein the urea-formaldehyde resin and the starch are crosslinked to increase a hot/wet tensile strength of the fiber-reinforced composite by 5% to 35%
compared to a comparative fiber-reinforced composite made with an unmodified urea-formaldehyde binder composition that lacks the starch.
8. The fiber reinforced composite of claim 7, wherein the organic or inorganic fibers comprise glass fibers.
9. The fiber reinforced composite of claim 7, wherein the composite is a non-woven glass-fiber reinforced mat.
10. The fiber reinforced composite of claim 9, wherein the non-woven glass-fiber reinforced mat forms part of a roofing shingle.
11. The binder composition of claim 1, wherein the pH of the composition is between about 7.0 and about 9Ø
12. The binder composition of claim 1, wherein the binder composition comprises between about 45% to about 75% by weight nonvolatiles.
13. A binder composition consisting of:
i) a urea-formaldehyde resin; and ii) about 1 wt.% to about 10 wt.% of a starch crosslinking agent selected from the group consisting of a native starch, a cationically modified starch, and an anionically modified starch, wherein the starch does not substantially increase a viscosity of the binder composition, wherein the binder composition lacks a styrene-containing, petroleum-based modifier, and wherein the urea-formaldehyde resin and the starch are crosslinked to increase a hot/wet tensile strength of a fiber-reinforced composite formed with the binder composition by 5% to 35% compared to a comparative fiber-reinforced composite made with an unmodified urea-formaldehyde binder composition that lacks the starch.
i) a urea-formaldehyde resin; and ii) about 1 wt.% to about 10 wt.% of a starch crosslinking agent selected from the group consisting of a native starch, a cationically modified starch, and an anionically modified starch, wherein the starch does not substantially increase a viscosity of the binder composition, wherein the binder composition lacks a styrene-containing, petroleum-based modifier, and wherein the urea-formaldehyde resin and the starch are crosslinked to increase a hot/wet tensile strength of a fiber-reinforced composite formed with the binder composition by 5% to 35% compared to a comparative fiber-reinforced composite made with an unmodified urea-formaldehyde binder composition that lacks the starch.
14. The binder composition of claim 13, wherein the binder composition comprises about 1 wt.% to about 2.5 wt.% of the starch.
15. The binder composition of claim 13, wherein the binder composition has a solids content of greater than 35 wt.%.
16. The binder composition of claim 13, wherein the binder composition has a solids content of about 45 wt.% to about 70 wt.%.
17. The binder composition of claim 13, wherein the urea-formaldehyde resin is an aqueous urea-formaldehyde resin.
18. The binder composition of claim 17, wherein the binder composition has a solids content of about 5 to about 35 wt.%.
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US13/300,841 US10119020B2 (en) | 2011-11-21 | 2011-11-21 | Modified urea-formaldehyde binders for non-woven fiber glass mats |
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CA3011317C (en) * | 2016-01-27 | 2020-04-07 | Kristaps DRAUDINS | An electrically conductive multi-layer material |
IT201800004786A1 (en) * | 2018-04-23 | 2019-10-23 | SUPPORT LAYER FOR INSULATING BUILDING PANELS INCLUDING ECO-SUSTAINABLE MATERIALS AND METHOD OF MANUFACTURING THE SUPPORT LAYER | |
US11697729B2 (en) * | 2019-08-16 | 2023-07-11 | Johns Manville | Modified urea-formaldehyde binders for non-woven fiber glass mats |
CN112663398A (en) * | 2020-12-23 | 2021-04-16 | 西安爱德乐环保科技有限公司 | Flexible glass fiber paper and preparation method thereof |
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US2302309A (en) * | 1939-10-19 | 1942-11-17 | Rohm & Haas | Stabilization of wet processed starch pastes with urea-formaldehyde |
GB907302A (en) | 1957-12-27 | 1962-10-03 | Owens Corning Fiberglass Corp | Improved glass fibre structures |
US3485776A (en) * | 1967-10-27 | 1969-12-23 | Corn Products Co | Novel starch composition and method of preparation |
US4014726A (en) | 1974-03-18 | 1977-03-29 | Owens-Corning Fiberglas Corporation | Production of glass fiber products |
CA1067226A (en) | 1974-03-18 | 1979-11-27 | Harland E. Fargo | Production of glass fiber products |
US4255485A (en) | 1979-11-08 | 1981-03-10 | Owens-Corning Fiberglas Corporation | Binder for glass fiber mat |
US4654259A (en) * | 1984-02-14 | 1987-03-31 | Carbocol Inc. | Method and composition for bonding solid lignocellulosic material |
US4855354A (en) * | 1988-01-07 | 1989-08-08 | Borden, Inc. | Aldehyde starch saturant laminating adhesives |
JPH0299655A (en) * | 1988-08-03 | 1990-04-11 | Sequa Chemicals Inc | Starch group binder composition for fiber mat and manufacture thereof |
US5026746A (en) * | 1989-06-26 | 1991-06-25 | Sequa Chemicals, Inc. | Starch based binder composition for non-woven fibers or fabrics |
US5582670A (en) * | 1992-08-11 | 1996-12-10 | E. Khashoggi Industries | Methods for the manufacture of sheets having a highly inorganically filled organic polymer matrix |
US5851933A (en) | 1995-09-14 | 1998-12-22 | Johns Manville International, Inc. | Method for making fiber glass mats and improved mats using this method |
US6379814B1 (en) * | 1997-12-19 | 2002-04-30 | Georgia-Pacific Resins, Inc. | Cyclic urea-formaldehyde prepolymer for use in phenol-formaldehyde and melamine-formaldehyde resin-based binders |
US7435483B2 (en) * | 2001-04-04 | 2008-10-14 | Advanced Plastics Technologies Luxembourg S.A. | Process for coating paper, paperboard, and molded fiber with a water-dispersible polyester polymer |
US20050070186A1 (en) * | 2003-09-29 | 2005-03-31 | Georgia-Pacific Resins, Inc. | Urea-formaldehyde binder composition and process |
US8257554B2 (en) * | 2006-10-05 | 2012-09-04 | Georgia-Pacific Chemicals Llc | Urea-formaldehyde resin composition and process for making fiber mats |
US7691761B2 (en) | 2006-12-28 | 2010-04-06 | Johns Manville | Roofing mat using modified urea-formaldehyde binder |
US7662258B2 (en) | 2006-12-28 | 2010-02-16 | Johns Manville | Roofing mat using urea-formaldehyde binder of particular viscosity and surface tension |
US8053528B2 (en) * | 2007-05-30 | 2011-11-08 | Georgia-Pacific Chemicals Llc | Binder compositions for fiber mats, and fiber mats and articles comprising them |
GB0905111D0 (en) | 2009-03-25 | 2009-05-06 | Dynea Oy | Binder for fibrous materials |
CA2770206C (en) | 2009-08-11 | 2014-06-03 | Kiarash Alavi Shooshtari | Curable fiberglass binder comprising amine salt of inorganic acid |
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US20130130582A1 (en) | 2013-05-23 |
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EP2594606A3 (en) | 2013-09-18 |
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